Pott's Spine (Spinal Tuberculosis) - Treatment

Overview

• Campbell's Operative Orthopaedics 15th Ed 2026

A. Medical (Chemotherapy) - First-Line Treatment

Standard Regimen (HRZE)

Duration

• Intensive phase: 2 months of HRZE
• Continuation phase: 4-7 months of HR (total 6-9 months for most cases)
• MRC (Medical Research Council) controlled trials showed that 6-month and 9-month short-course regimens are comparable to 18-month regimens when combined with radical surgery
• Some authorities use up to 12 months for spinal TB without surgery, particularly with neurological involvement or extensive disease

Key Principles

• Start antibiotics before any surgical intervention - miliary dissemination has been reported when surgery is performed without adequate chemotherapy
• Serial ESR and CRP are useful to track treatment response (CRP normalizes within ~14 days; ESR shows gradual decline)
• Chemoprophylaxis should be extended to household contacts with a positive TST
• MDR-TB requires individualized second-line regimen (fluoroquinolones, aminoglycosides, etc.)

B. Orthotic / Conservative Measures

• Bed rest / immobilization - reduces mechanical stress on diseased vertebrae
• Bracing (thoracolumbar orthosis) - for pain control and preventing deformity progression during early treatment; especially useful when surgery is deferred
• Ambulation is started progressively once pain and ESR improve

C. Surgical Treatment

Indications for Surgery

1. Neurological deficit - paraplegia or progressive myelopathy (most common indication)
2. Failure of conservative treatment (ongoing pain, disease progression)
3. Spinal instability with threatened or actual cord compromise
4. Large abscess causing compression
5. Severe kyphotic deformity (gibbus) threatening cord
6. Diagnostic biopsy when diagnosis is uncertain

Surgical Principles (Campbell's Concepts)

• Wide debridement of necrotic tissue
• Splinting/casting in functional position
• Arthrodesis is necessary for intraarticular involvement
• Antibiotic therapy must be started before surgery

Surgical Approaches

1. Anterior Debridement + Bone Grafting ("Hong Kong Operation")

• Classic approach by Hodgson & Stock (1956)
• Radical anterior debridement, strut bone grafting for fusion
• Gold standard for thoracic and lumbar TB with kyphosis
• Corrects deformity and decompresses cord

2. Posterior Instrumentation + Fusion

• Useful for lumbar lesions
• Can be combined with anterior debridement (combined approach)
• Single-stage posterior surgery increasingly used for lumbar TB (recent evidence)

3. Combined Anterior-Posterior Approach

• For extensive multi-level disease or severe kyphosis requiring greater correction
• Provides best deformity correction and fusion rates

4. Video-Assisted Thoracic Surgery (VATS)

• Minimally invasive option for thoracic spinal TB diagnosis and debridement

5. Anterolateral Decompression

• Used for Pott's paraplegia (Seddon technique)
• Decompresses cord by removing the offending anterior lesion via a lateral approach

Management of Pott's Paraplegia

• "Early-onset" paraplegia (active disease) - usually responds well to chemotherapy ± anterior decompression
• "Late-onset" paraplegia (healed disease with mechanical cord compression from kyphosis) - requires surgical decompression and correction of deformity
• Anterolateral decompression or anterior debridement with stabilization are preferred

D. Abscess Management

• Paraspinal/psoas abscesses - often resolve with anti-TB chemotherapy alone
• If large, causing symptoms, or not resolving - CT/US-guided percutaneous drainage
• Open drainage is rarely needed unless there is secondary bacterial superinfection

E. Monitoring & Healing Assessment

Recent Evidence (2024 Meta-Analysis)